TY - RPRT TI - Use of environmental tracers and isotopes to evaluate sources of water, nitrate, and uranium in an irrigated alluvial valley, Nebraska AU - Ingrid M. Verstraeten AU - J.K. Bohlke AU - Thomas F. Kraemer AU - James C. Cannia PY - 2002 DO - 10.3133/fs10001 UR - https://pubs.usgs.gov/publication/fs10001 ID - fs10001 ER -